Not scanning for spam?

[Edward Dekkers]

For the last three days or so I've noticed some spam getting through.
Not huge amounts but it appears from my log they're not even getting
looked at (addresses changed to protect the innocent):

Feb 12 01:47:14 ubuntu postfix/smtpd[29715]: connect from
unknown[219.139.33.58]
Feb 12 01:47:17 ubuntu postfix/smtpd[29715]: 1A5F4C70273:
client=unknown[219.139.33.58]
Feb 12 01:47:19 ubuntu postfix/cleanup[29719]: 1A5F4C70273: hold: header
Received: from 219.139.33.58 (unknown [219.139.33.58])??by
mydomain.com.au (Postfix) with ESMTP id 1A5F4C70273??for
<edward at mydomain.com.au>; Tue, 12 Feb 2008 01:47:16 +0900 (WST) from
unknown[219.139.33.58]; from=<raghu at geocities.com>
to=<edward at mydomain.com.au> proto=ESMTP helo=<219.139.33.58>
Feb 12 01:47:19 ubuntu postfix/cleanup[29719]: 1A5F4C70273:
message-id=<000a01c86ccd$0187cc62$bc517ba5 at hugwbuoo>
Feb 12 01:47:19 ubuntu MailScanner[24154]: New Batch: Scanning 1
messages, 2517 bytes 
Feb 12 01:47:19 ubuntu MailScanner[24154]: Spam Checks: Starting 
Feb 12 01:47:19 ubuntu MailScanner[24154]: Requeue: 1A5F4C70273.EDF38 to
B65C4C7029D 
Feb 12 01:47:19 ubuntu postfix/qmgr[5357]: B65C4C7029D:
from=<raghu at geocities.com>, size=2002, nrcpt=1 (queue active)
Feb 12 01:47:19 ubuntu MailScanner[24154]: Unscanned: Delivered 1
messages 
Feb 12 01:47:19 ubuntu MailScanner[24154]: Virus and Content Scanning:
Starting 
Feb 12 01:47:19 ubuntu postfix/local[29721]: B65C4C7029D:
to=<edward at tdcs.com.au>, relay=local, delay=3.2, delays=3.2/0.02/0/0.04,
dsn=2.0.0, status=sent (delivered to command: /usr/bin/procmail -a
$EXTENSION)
Feb 12 01:47:19 ubuntu postfix/qmgr[5357]: B65C4C7029D: removed
Feb 12 01:47:20 ubuntu postfix/smtpd[29715]: disconnect from
unknown[219.139.33.58]
Feb 12 01:47:21 ubuntu MailScanner[24154]: Virus Scanning completed at
1304 bytes per second 
Feb 12 01:47:21 ubuntu MailScanner[24154]: Batch completed at 1299 bytes
per second (2517 / 1) 
Feb 12 01:47:21 ubuntu MailScanner[24154]: Batch (1 message) processed
in 1.94 seconds 

Any ideas why it would say it's starting checks then delivers it
unscanned?

Theres no mention of goecities in my whitelists or anything.

Regards,
Ed.